The word "hair" usually refers to two distinct structures:
1. the part beneath the skin, called the hair follicle, or, when pulled from the skin, the bulb or root. This … See more

Many mammals have fur and other hairs that serve different functions. Hair provides thermal regulation and camouflage for many animals; for others it provides signals to other … See more

Ringworm is a fungal disease that targets hairy skin.
Premature greying of hair is another condition that results in greying before the age of 20 years in Europeans, before 25 years in Asians, and before 30 years in Africans. See more

Each strand of hair is made up of the medulla, cortex, and cuticle. The innermost region, the medulla, is an open and unstructured region that is not always present. The highly … See more

Hair is mainly composed of keratin proteins and keratin-associated proteins (KRTAPs). The human genome encodes 54 different keratin proteins … See more

Hair has its origins in the common ancestor of mammals, the synapsids, about 300 million years ago. It is currently unknown at what … See more

Hair care involves the hygiene and cosmetology of hair including hair on the scalp, facial hair (beard and moustache), pubic hair and … See more